Tension means for wire-tying machines



June Q1925. 1,544,096

J. s. MCCHESNEY v TENSION MEANS FOR WIRE TYING MACHINES Filed Oct. 28, 1924 Patented June 30, 1925.

UNITED STATES PATENT oFF cE.

JOHN SHERMAN MCCHESNEY, OF CHICAGO, ILLINOIS, ASSIGNOR TO CARY MANU- FACTURING 00., OF BROOKLYN, NEV! YORK, A CORPORATION OF NEW YORK.

TENSION MEANS FOR VJIRE-TYING MACHINES. 1

Application filed October 28, 1924.

To all whom it may concern:

.Be it known that I, Jonn S. McCnnsNnY, a citizen of the United States, residing at Chicago, county of Cook, State of Illinois, have invented a certain new and useful Tension Means for ire-Tying Machines, of which the following is a specification.

This'in vention isia tension means for a wire tying machine, and it pertains, more particularly, to a rotatable head constituting one member of a tension means disclosed generally in a copending application filed by me on Oct. 28, 1924, Serial No, 746,282.

The object of the invention isto enable a deformed tie to be connected with ease and facility to the tying machine preliminary to the formation of a loop adapted to encircle a package, to provide for a self-locking connection of the deformed tie with the head upon the introduction of said tie, and to hold the tie securely from dislodgment with respect to the head upon the application of-tensionto the looped tie.

Vl ith these and other objects in view, my invention is a head provided on one of its faces with a plurality of abutments, and a plurality of movable members carried by the head in position-for, co-operation with said abutments, whereby a wire tie may be introduced with facility and by a rotative movement of said head one abutment and one movable member are adapted for self locking engagement with said deformed tie in a manner to effect a secure anchorage of the tie with respect to the head.

ther features and advantages of the invention will appear from the following description taken in connection with the drawings, wherein- Figure 1 is a face view of my tension head with the movable members in the positions which they normally occupy, said view illustrating the operation of inserting a deformed end portion of a wire tie preliminary to effecting the desired looking or anchoring connection of said tie to the head.

Figure 21 is a view partly in section illustrating the mode of locking the deformed tie to the head by a rotative movement of said head.

Figures 3 and 4 are cross sectional views on the lines and l1-, respectively, of Figure 1.

The tension head shown in the drawings is of any suitable form, preferably circular,

and is composed of a solid body or member A and a plurality of movable tie-locking members B. V

The circular member or body A is of novel formation to adapt it for co-operation with the movable members B, and to this end I provide the body or member with a plurality of radial recesses a by cutting away the metal in one of its faces so as to produce a plurality of abutments b. As shown, each abutment is separated by a recess (a from the adjacent abutments, and each abutment has a straight edge 0 radial to the axis of the head, a shorter straight edge cl at a tangent to the circumference, an arcuate inner edge e, and a short edge 7" between the arcuate edge e and the tangen tial edge d. At the arcuate edge, the abutment is recessed at g to produce an overhanging flange it, see Figure 3, and in the straight edge 0 of the abutment is a recess 2' see dotted lines in Figures 1 and 2.

Said body or member A is produced with an axial opening adapted to receive a shaft C by which the head is supported in the tying machine as disclosed in my aforesaid application; 'andin addition to this axial opening, the head is provided with other openin s j, the axes of which are parallel to the axis of the central shaft opening.

The movable tie-locking members B are fitted loosely in said openings j, one in each opening. Each member is a cylindrical pin which is cut away or recessed near one end as at b to produce a lip or shoulder 0 at the end, said recess resulting in a fiat face a and a sharp or well defined shoulder 7. Each locking pin or member B is fitted in an opening 7' for the recessed end I) of said pin to extend into the recess a of the head and for the annular surface of said pin or member to occupy the recess 2' of one of the abutments 6, said recess '5 tending to restrain the pin from sliding movement in one direction relatively to the head A, whereasthe contact of the other end of said pin with a frame part D of the machine restrains the pin from endwise movement in an opposite direction. V

E is a shouldered ,wire tie of the character disclosed in Cary Patent No. 1,419,110, dated June 6, 1922, which tie is composed of a piece of straightened wire, cut to a length to suit the package, and which wire tie is deformed to produce a flattened portion 6 and iii) 6 see Figures 1 of the tie wire between the straight edge 0 of the abutment b and the flat face a of the recessed end'portion of the pin. The tie having been thrust between the abutment andthe locking member, the operator holds the wire tie with one hand and with the other hand gives a" partial turn to the entire head the direction of the arrow as inFigure 1, the effect of which is to turn therecessed pin or member for the sharp edge f to take behind one shoulder 0 whereas a corresponding sharp edge of the abutment b takesbeihindthe shoulder e on the opposite side of thetie, as shown in Figure 2. I Furthermore, the rotative m-oyement given manually to the head A deflects or bends the tie 'E to the form shown in Figure 2 so as to-substan-tially aline the tie with a direction roll by which the tie wire may be passed into the slot or throat of the machine as disclosed in my aforesaid application.

As shown, the deformed .tieand the tension head are self lock'ing by a rotative movement of the head, for the reason that the abutment Z) and theedge f are brought into engagement with the shouldered part c of the tie. Thisconstruction enables the tie to be inserted with facility and by the rotative movement of the head the deformed part of the tie is locked semi-automatically to the head, whereby the tie is connected or anchored to the head in a manner which effectively prevents the tie from dislodgment from or "from becoming disconnected, under the strain or pull exerted on the tie by the head.

The lip h of the abutment b and the lip 0 of the pin B preclude. sidewise motion of the tie wire when the latter is bent by the operator to pass it around the direction roll and to positionlsaid tie in the throat of the tying machine. 1

As. shown, the body member A of the head is provided with a, circumferential groove Z" and with a plurality of radial pockets k, said groove and the pockets affording means for utilizing non-deformed pieces of plain straight round wireeties. The plain wir is adapted to have an end thrust into the pocket 7; andto be wrapped part way around the head within the groove h, but these pockets and the grooves may be used or omitted as desired.

hf improved construction is simple in construction consists of few parts economical of manufacture, enables a tie wire to be inserted with facility and anchored in a fined position by a simple rotative movement of the head, and is efficient in operation.

Having thus fully described" the invention, a

what I claim as new and desire to secure by Letters Patent is:

1. A tension head for wire tying mach nes embodying a recessed body member pro vided with a plurality of abutments, and a plurality of axially-movable locking mem bers supported in said body in position for cooperation with said abutments to effect a self locking attachment of a deformed :tie by a rotative movement of the body member.

A tension head for wire tying machines embodying a body member provided in' one face thereof with recesses producing a plurality of abutn'ients, and a plurality of locking members fitted to said body member for axially turning movement therein, said abutments and thelocking members being in co-operative relationto each other for engagement with adeformed tie wire by a rotative movement of said head. a

8. A tension head for wire tying machines en'rbodying a body member n'ovided in one face with recesses producing a plurality of abutments, and locking members positioned in said recesses force-operation with said abutments, said abi'itments and the locking members being provided with means to preclude sidewise movement of a deform d tie wire which is adapted to be locked within the head by engagement therewith of one abutmeut and a locking member.

Atension head for wire tying maehii'lcs embodying a'body member provided with a tie-locking abutment, anda tie locking member rotatably mounted in said head fore-ooperation with said abutment.

5. A tension head for wire tying machines embodying a, body member recessed in one face and provided with a tielocking abutn'ient, and a tie-locking member rotatable in said body member and positioned in the recess thereof for contact with atie when the latter is inserted, said locking member and the abutment eo-operating with. a deformed tie to lock the same in fixed engagement with'said head. i

In testimony whereof I have hereto signed my name this 93rdday of October, 1924.

JOHN SHERMAN bICQl-IESNEY 

